Phonograph needle or stylus sharpener



O. THOMPSON.

PHONOGRAPH NEEDLE 0R STYLUS SHARPENER.

APPUCATION FILED DEC. 10, 1918.

' 1,334,81 8. Patented Mar. 23, 1920;

7/ 10. 3 l gvwntoz UNITED PATENT OFFICE...

ORRIN THOMPSON, 9F NEENAH, WISCONSIN.

PHONOGRAPH NEEDLE OR STYLUS SHARPENER.

eaters.

Apphcation filed December 10, 1918.

To all an/1.0m it may concern Be it known that I 01mm TrroMrsoN, acitizen of the United gtates, residing at Neenah, in the county of"Winnebago and State of Wisconsin, have invented certain new and usefulImprovements in Phonograph Needle or Stylus Sharpeners, of which thefollowing is a specification.

T his invention relates to improvements in phonograph accessories and itis the principal object of the invention to provide a novel phonographneedle or stylus sharpener capable of being used to efficiently sharpenand polish phonograph. needles or styluses formed of fiber, wood,composition or other substance and to cause the accurate reproduction,with the use of reproducmg mechanism, of the sound waves on a record,thus lengthening the period of time for which these devices can beordinarily used and in consequence, effecting a saving upon part of auser.

Another and equally important object of the invention is to provide thedevice with a form of needle or stylus carriage such as will permitsliding movement of the same and the needle or stylus carried therebylongitudinally and transversely over an abrasive surface with which thedevice is provided or in other words, affords a compound longitudinaltransverse or near rotary motion, thereby facilitating the sharpeningand polishing operation.

Other objects will be in part obvious and in part pointed outhereinafter.

The improvements in the details and arrangement of the parts of thedevice will be more fully understood when considered in connection withthe specific description hereinafter contained and wherein a preferredembodiment of the invention is disclosed for the purpose ofillustration.

In these drawings:

Figure 1 is a top plan view of the sharpener,

Fig. 2 is a side elevation thereof, 1

Fig. 3 is a vertical longitudinal section therethrough,

Fig. 4 is an end elevation of the device, and

Fig. 5 is a detail in perspective of the needle or stylus holdingcarriage.

Having more particular reference to the drawing in connection with whichlike reference characters will designate corre Specification of LettersPatent.

Patented Mar. 23, 19.20.

Serial. No. 256,034.

sponding parts throughout the several views, 1 represents the base orbody portion of the device formed of sheet metal or other suitablematerial and ha vinga lon gitudinally disposed elevated track or way 2formed thereon intermediate its opposite sides, one side of which isslotted longitudinally tor a distance of its length as indicated at 3.Ears i are formed on the opposite ends of this raised track 2 and serveas securing means for a sheet of abrasive material 5 such as sandpaper,emery paper or the like whereby to prevent undue shitting or'movement ofthe paper with relation to the adjacent portion oi the track.

Engaged over the raised or elevated track 2 is a carriage indicated inits entirety by the numeral (3 and comprising a body portionsubstantially U-shaped in cross section, the extremities of which areslidably en gaged with those portions oi the base 1 opposite the track2. As will be noted, the forward portion of the top of the carriage 6 isrecessed and is formed with a vertically disposed arm 7 carrying aneedle or stylus holder 8 011 its upper extremity, said holder beingdisposed downwardly at an angle oblique to the arm 7 and being of suchshape as to snugly receive a needle or stylus 9 therein. It may be notedat this particular point, that the holder 8 can be of any size or shapeto correspond with the various designs or makes of needles or stylusesnow marketed, such as conditions or preference may dictate. The upperportion of the holder is open to permit the ready insertion oi. theneedle 9 thereinto without contact with the arm 7 and the possibledamaging ot the needle. Bars 10 and 11 are struck down wardly from therear portion of the top oi? the carriage 6, the ear 10 having its treeportion bent inwardly to slidably engage the slotted side 3 of theraised track 2 while the car 11. engages the remaining side of saidraised track. It will be understood, that by so connecting the carriage6 to the raised track 2 of the base of the sharpener, that a compoundlongitudinaltransverse motion of the carriage with relation to the baseof the sharpener will be permitted, or in other words, the near rotarymotion so desirable in the sharpening of various articles on abrasivesurfaces can be obtained by this particular form of connection betweenthe carriage and the raised track. However, undue displacement of thecarriage with relation to the base of the sharpener will be prevented.

In usin the sharpener, a needleor stylus is engage in the holder 8 topermit contact between the lower end of the same'and the abrasive sheet5 arranged on the raised'track 2. At this time, the carriage 6 is movedback and forth with relation to the base 1 longitudinally andtransversely in order that the lower end of the stylus will be movedover the abrasive sheet in a manner to efficiently sharpen andalsopolish the same,

thus renewing the reproducing point thereposite sides of the carriageand in consequence movement of said carriage transversely of the raisedtrack 2 will be permitted. Obviously, the abrasive material 5 can berenewed as it becomes necessary.

Manifestly, the construction shown is capable of considerablemodification and such modification as is within the scope of my claim, Iconsider within the spirit of my invention.

I claim:

A sharpening device of ,the character described, comprising a base madefrom sheet metal formed with a raised flat longitudinal center portionhaving a slot in its side for a major portion of its length, an abrasivestrip carried upon the fiat raised portion, a carriage made from sheetmetal slidable upon the base and extended over the raised fiat portionthereof, a vertically disposed arm formed on the forward end of thecarriage, a stylus holder cut and bent from the arm and turneddownwardly at a forwardly inclined angle relative to the arm and adaptedto frictionally hold stylus to be acted upon by the abrasive strip onreciprocation of the carriage, and ears cut and bent from the rear endof the carriage, one ear being engaged in the slot and the other earplaying against the opposite side of the raised flat portion.

In testimony whereof I aflix my signature hereto.

ORRIN THOMPSON.

